CVE-2026-116682

{
  "etk_id": "ETK-2026-2783",
  "cve_id": "CVE-2026-116682",
  "display_id": "CVE-2026-116682",
  "ghsa_id": "GHSA-mgqf-5mf5-prfj",
  "euvd_id": "EUVD-2026-111279",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Symlink boundary bypass in gtsteffaniak filebrowser",
  "summary": "The filebrowser backend can serve content outside a configured source boundary after resolving symbolic links. An authorized file user, or a person holding a public-share link, may access service-readable files beyond that boundary if the exposed directory includes a link to an external target.",
  "mitigation": "Upgrade github.com/gtsteffaniak/filebrowser/backend to >= 1.5.2-stable, >= 2.0.1-beta or later.",
  "vendor": "gtsteffaniak",
  "product": "filebrowser",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 1.5.1-stable"
      ],
      "ecosystem": "go",
      "fixed_versions": [
        ">= 1.5.2-stable"
      ],
      "package_name": "github.com/gtsteffaniak/filebrowser/backend",
      "purl": "pkg:golang/github.com/gtsteffaniak/filebrowser/backend"
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 2.0.0-beta"
      ],
      "ecosystem": "go",
      "fixed_versions": [
        ">= 2.0.1-beta"
      ],
      "package_name": "github.com/gtsteffaniak/filebrowser/backend",
      "purl": "pkg:golang/github.com/gtsteffaniak/filebrowser/backend"
    }
  ],
  "cwes": [
    22
  ],
  "cvss_score": 8.6,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 17.015880966666668,
  "t0_at": "2026-10-27T17:48:04.364000+00:00",
  "signals": {
    "public_poc": {
      "at": "2026-10-27T21:04:40+00:00",
      "days": 0.1365235648148148,
      "is_lower_bound": false,
      "measured_at": "2026-10-27T17:48:04.364000+00:00",
      "url": "https://github.com/advisories/GHSA-mgqf-5mf5-prfj"
    },
    "trigger_signal": {
      "at": "2026-10-27T17:48:04.364000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-27T17:48:04.364000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-116682"
    }
  }
}